Electric toothbrush

Abstract

The invention discloses an electric toothbrush, which includes a main body and a brush head, the main body and the brush head are flexibly connected through a movable part, and further includes: a motor; a steel wire, the first end of which is connected to the output shaft of the motor, And can rotate with the output shaft; the eccentric shaft is arranged in the movable part, the first end of the eccentric shaft is connected with the second end of the steel wire, and rotates with the steel wire, the eccentric shaft The second end is connected to the movable part in such a way that the movable part moves with the second end of the eccentric shaft in the radial direction, wherein: the steel wire has at least one curved section, and the curved section is limited to on the same plane. Since the steel wire of the above structure is arranged between the eccentric shaft and the motor, the axial position and radial position of the eccentric shaft can be changed, thereby changing the vibration frequency and amplitude of the brush head, thereby meeting different requirements for 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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