| 摘要 |
There is provided a toothbrush head for an electric toothbrush, in accordance with an aspect of the present invention. A camshaft passes substantially through the main body of the toothbrush head and is adapted for connection to a motor to rotate the shaft. The camshaft has a first section that defines a longitudinal axis. A first bristle head is rotatably mounted to the main body for rotation between a first rotational position and a second rotational position. A second bristle head is slidably mounted to the main body proximate the tip and is moveable between a first position proximate to the longitudinal axis and a second position spaced from the longitudinal axis. The rotation of the camshaft drives the first bristle head between the first rotational position and the second rotational position and second bristle head from the first position to the second position.
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