A rotary electric toothbrush

Abstract

The application relates to the technical field of electric toothbrushes, in particular to a rotary electric toothbrush. During mutual combination of a rotary toothbrush head and a toothbrush handle, one end of a driving shaft of a driving device installed in the toothbrush handle is inserted into an insertion slot arranged in the rotary toothbrush head, and a clamping protrusion protruding from the inner wall of the insertion slot is clamped into a clamping groove arranged in the driving shaft, then the clamping protrusion is limited by the inner wall of the clamping groove, so that the rotary toothbrush head and the toothbrush handle are prevented from being separated from each other, and the reliability of the connection between the rotary toothbrush head and the toothbrush handle is improved. The driving shaft of the driving device is directly connected with the rotary toothbrush head, so that the reliability of the connection of the internal structure of the electric toothbrush is improved, and the risk of loosening or jamming of the electric toothbrush during use is reduced.

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