Electric toothbrush

Abstract

The invention discloses an electric toothbrush. The electric toothbrush comprises a handle and a brush head, the handle comprises a handle shell and a machine core arranged in an inner cavity of the handle shell, the machine core comprises a motor, the head of the handle shell is connected with a driving connection part, the driving connection part is provided with an accommodating cavity for accommodating a motor driving rod, the brush head is connected to the driving connection part in a sleeving mode, and the motor drives the driving connection part through the motor driving rod to vibrateand thus drives the brush head to vibrate. The electric toothbrush has a good waterproof effect and high driving performance.

Description

technical field [0001] The invention relates to the technical field of electric toothbrushes, in particular to the technical field of waterproofing and motors for electric toothbrushing. Background technique [0002] The motor shaft of the drive motor used in the electric toothbrush in the prior art is usually connected by a bearing located at the upper end of the motor and a return shrapnel located at the lower end. This kind of single bearing plus return shrapnel motor is often prone to motor bearing deviation from the central axis of the motor during the high-speed vibration of the motor shaft, resulting in damage to the motor, and because of this feature, the motor stator needs to be A larger distance is set between the rotor and the stator of the motor, and if the distance between the stator and the rotor of the motor is too large, there will be a large magnetic dew phenomenon, which limits the requirement for high amplitude of the electric toothbrush. [0003] The top...

AI Technical Summary

Problems solved by technology

This kind of single bearing plus return shrapnel motor is often prone to motor bearing deviation from the central axis of the motor during the high-speed vibration of the motor shaft, resulting in damage to the motor, and because of this feature, the motor stator needs to be Set a large distance between the motor and the rotor, and if the distance between the stator and the rotor of the motor is too large, there will be a large magnetic dew phenomenon, which limits the high amplitude requirements of the electric toothbrush

[0003] The top of the head of the handle of the electric toothbrush in the prior art often has the problem of water leakage on the head of the electric toothbrush due to the motor shaft passing through the inside of the handle cavity.

In the prior art, the waterproofing of the head of the electric toothbrush is usually achieved by setting the waterproof soft rubber inside the handle shell at the top position. This method of setting the soft rubber protection on the top of the handle shell cavity will not only increase the cost of the design , the soft rubber waterproof parts will also occupy a large space in the inner cavity of the handle

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