摘要：【中文】电动双头对滚牙刷刷头结构，包括两个刷头本体、用于连接刷头本体和电机输出端的传动部件、中空的刷颈以及背壳，背壳包括侧壁和背壁，侧壁绕背壁的外沿一周且并与背壁相连，背壳中形成容置腔；两个刷头本体设置在容置腔内，刷颈的顶端固定连接背壳，背壳的侧壁上开设有连通刷颈内腔的通孔，传动部件经通孔往下穿设至刷颈的内腔中。与以往的双头对滚牙刷相比，本发明可避免刷头本体背面摩擦口腔壁及碰撞牙齿引起不适的问题，同时可以减轻刷头本体转动时产生的振动，降低摩擦噪声；本发明还能做到与传统手动牙刷基本相当的刷头厚度，厚度更薄的刷头更容易伸至口腔深处，刷牙效果更好。 【EN】The electric double-head rolling toothbrush head structure comprises two toothbrush head bodies, a transmission part for connecting the toothbrush head bodies and the output end of a motor, a hollow toothbrush neck and a back shell, wherein the back shell comprises a side wall and a back wall, the side wall surrounds the outer edge of the back wall for a circle and is connected with the back wall, and an accommodating cavity is formed in the back shell; two brush head bodies set up in the holding intracavity, and the top fixed connection dorsal scale of brush neck sets up the through-hole of intercommunication brush neck inner chamber on the lateral wall of dorsal scale, and transmission part is down worn to establish to the inner chamber of brush neck through the through-hole. Compared with the prior double-head rolling toothbrush, the toothbrush can avoid the problem that the back surface of the toothbrush head body rubs the cavity wall of the mouth and collides teeth to cause discomfort, and simultaneously can reduce the vibration generated when the toothbrush head body rotates and reduce the friction noise; the invention can also achieve the thickness of the brush head which is basically equivalent to that of the traditional manual toothbrush, the brush head with thinner thickness can extend to the deep part of the oral cavity more easily, and the tooth brushing effect is better.