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Electric toothbrushes

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Electric toothbrushes

Issue Time:2020-07-24


When you smile, do you show beautiful teeth? If not, you may need an electric toothbrush.

The frequency of brushing of the electric toothbrush can keep the mouth clean and tidy and wash away the plaque. This means you can keep your teeth and gums healthy without going to the dentist frequently.

So, Let’s take a close look how the electric toothbrush works?

What is the mystery inside the electric toothbrush?                       

What is an electric toothbrush?

Electric toothbrush refers to a toothbrush that uses electric current through a motor assembly to vibrate the brush head. So that the toothpaste can be quickly decomposed in the oral cavity, thereby keeping the oral cavity clean and tidy.

Accessories for electric toothbrushes
There is an old electric toothbrush here. Does it seem to be new, as if it has not been used before, so I need to take it apart to see what's inside?                            

First you can see that there is a brush head on the upper part, which takes on the burden of brushing the teeth. Once it receives the brushing command, it will start vibrate.

Let's look at the picture on the left as follows.                   

In the second part, we look at its body, you will find that when the mechanism on the handle vibrates, the brush head will also vibrate. There is a cam device under the pen tip, which looks like the picture on the right as above.


What's inside an electric toothbrush and how does it work?

There is a protruding wheel on the electric toothbrush convert the high-speed rotating motion of the toothbrush motor into vibrating brushing motion. The work of cams is a bit like this very simple diagram.

The orange motor always rotates around high speed in the same direction, but the red and black cams and cranks are converted to low speed and vibrate back and forth. Therefore, when the red cam rotates, the black crank first pulls in one direction, and then pulls in the other direction, cause the brush head to vibrate.                            

The cam unit is connected to the gear built in the top of the motor. There is an electric-driven vibration motor inside the toothbrush, which can make the brush head produce high-frequency swings perpendicular to the direction of the brush handle, but the swing amplitude is very small, generally 5 mm up and down. Around, the industry swing is 6 mm. Under the motor, there is a plastic battery box. Connected to the plastic shell is a simple circuit board, the shell is made of hard plastic, the switch is embedded in a thin, very elastic rubber. The purpose of the enclosure is to prevent water and toothpaste from contacting the motor and battery, and to keep them from getting rusty when wet.

The industrial chain of electric toothbrushes
From production to sales, electric toothbrushes have a complete industrial chain. The upstream includes toothbrush filaments, electrical equipment, plastic materials, etc., the midstream includes electric toothbrushes, and the downstream includes specialty stores, shopping malls and supermarkets.                             

2014-2021 China's electric toothbrush industry market size statistics and forecast

However, with the continuous improvement of the living standards of Chinese residents, consumers are paying more and more attention to the quality of life, and their willingness to consume electric toothbrushes is also increasing. In the future, the scale of the electric toothbrush market will be further expanded. The data shows that the size of my country's electric toothbrush market was 2.65 billion yuan in 2014, and the market size increased to 9.3 billion yuan in 2018, and its growth rate is amazing. It is predicted that my country's electric toothbrush market will reach 22.59 billion yuan in 2021.