Double-shaft electric toothbrush

Abstract

The invention discloses a double-shaft electric toothbrush. The double-shaft electric toothbrush comprises a shell serving as a toothbrush handle and two adjacent brushes rotating oppositely, each brush comprises a brush head and a brush shaft, and the brush shafts are driven by a motor installed in the shell; and the brush shafts extending into the shell are supported by bearings in the shell, and each brush head of each brush is in cantilever state. According to the invention, the brush head is in cantilever state, without barrier at the front end, so that wisdom teeth at the innermost end in an oral cavity can be conveniently brushed; and the brush heads are convenient to clean, so that the double-shaft electric toothbrush can prevent bacteria from breeding.

Description

[technical field] [0001] This invention relates to electric toothbrushes, and more particularly to a dual-axis electric toothbrush having two adjacent, counter-rotating brushes. [Background technique] [0002] There are three types of toothbrushes used in large quantities: the first type is the traditional manual toothbrush, because the human tooth arrangement structure can be divided into upper and lower, left and right, and inner and outer sides, and after arrangement and combination, there are eight operating surfaces; The gums, the angle of the bristles and the brushing surface should maintain a certain oblique angle, which is very difficult to do manually. The second type is the commonly used reciprocating electric toothbrush on the market, which solves the power problem, and the brushing direction is reciprocating swing and partly rotated, which still does not meet medical requirements. The third category is the water pressure water column type, and some ultrasonic ma...

AI Technical Summary

Problems solved by technology

[0002] There are three types of toothbrushes used in large quantities: the first type is the traditional manual toothbrush, because the human tooth arrangement structure can be divided into upper and lower, left and right, and inner and outer sides, and after arrangement and combination, there are eight operating surfaces; For the gums, the angle of the bristles and the brushing surface should maintain a certain oblique angle, which is very difficult to do manually

The second type is the reciprocating electric toothbrush commonly used in the market, which solves the power problem. The brushing direction is reciprocating swing and partial rotation, which still does not meet the medical requirements.

The third category is the water pressure water column type, and some ultrasonic matching types, etc., which still cannot take into account many problems such as ease of use, comprehensiveness, speed, and cleanliness.

This toothbrush can solve the discomfort problem caused by the high-frequency vibration of traditional electric toothbrushes, but because the front end of the cylindrical brush is supported by bearings, the bearing and the support occupy a certain space, so that the bristles of the cylindrical brush cannot be brushed to the end The wisdom teeth at the end, especially the outer surface of the wisdom teeth at the end cannot be brushed, and the residues in the bearings and supports are easy to breed bacteria, making it difficult to clean the head of the toothbrush

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