Electric toothbrush

Abstract

The invention discloses an electric toothbrush, which comprises a main body part and a brush head, wherein the main body part and the brush head are flexibly connected through a movable part, and theelectric toothbrush further comprises a motor; a steel wire, wherein the first end of the steel wire is connected to the output shaft of the motor, and can rotate along with the output shaft; and an eccentric shaft arranged inside the movable part, wherein the first end of the eccentric shaft is connected to the second end of the steel wire, and rotates along with the steel wire, the second end ofthe eccentric shaft is connected to the movable part in the manner of the radial moving of the movable part along with the second end of the eccentric shaft, the steel wire has at least a bending section, and the bending section is defined in the same plane. According to the present invention, the steel wire with the structure is arranged between the eccentric shaft and the motor so as to changethe axial position and the radial position of the eccentric shaft, such that the vibration frequency and the vibration amplitude of the brush head are changed so as to meet different requirements on vibration.

Description

technical field [0001] The invention relates to a daily necessities, in particular to an electric toothbrush. Background technique [0002] Electric toothbrush has been used by more people as a new oral cavity cleaning tool, and its main advantage is that the action of the brush head does not need to be driven by human hands, but driven by automatic mechanical power. Electric toothbrushes in the prior art usually include a main body (the profile of the main body is similar to the handle of an ordinary toothbrush), a movable part connected to the main body (the movable part is made of elastic material, and when subjected to radial force and torsion It can be bent and twisted when the torque is applied) and the brush head arranged on the movable part, the motor is arranged in the main part, and the eccentric shaft is arranged in the movable part, and the eccentric shaft is driven by the motor to form an eccentric rotation, due to the rotation of the eccentric shaft The movabl...

AI Technical Summary

Problems solved by technology

[0003] However, the electric toothbrush with the above-mentioned structure in the prior art remains unchanged due to the eccentric movement of the eccentric shaft, and the position of the center of gravity of the eccentric shaft itself does not change, so that the vibration frequency and amplitude of the brush head remain basically unchanged, thus Unable to adapt to the requirements of different groups of people for different vibration frequencies and amplitudes

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