Ultrasonic toothbrush
Working principle of ultrasonic toothbrush
Vibration principle of eccentric wheel of (1) high-speed micromotor;
This principle is very common and widely used. Usually, the motor speed should reach 30,000 rpm, and higher speed will have an impact on the life of the motor itself. There is no saying that the amplitude and noise generated by sound wave vibration change with the structural design of motors and toothbrushes with different specifications.
Ultrasonic toothbrush
(2) High-frequency vibration principle of magnetic suspension motor:
This principle has been applied to high-end sonic toothbrushes by some well-known brands, such as Philips, Braun Orla-B and Shu Ning Supecare. Magnetic suspension vibration is based on electromagnetic vibration starter. The principle is that the electromagnetic device forms a magnetic field after being electrified, and the vibration starter is suspended in the middle of the magnetic field to form a high-frequency vibration frequency, which is then transmitted to the toothbrush through the transmission shaft. This vibration principle does not produce mechanical friction inside the motor, and has strong stability and high output power. The frequency of generated sound waves can reach 37,000 times per minute. The higher the frequency of sound wave, the higher the technical difficulty of motor.
The working principle of acoustic toothbrush is that the high-speed movement of micro-motor drives the toothbrush head to swing left and right at high speed, resulting in mechanical vibration, that is, acoustic waves. The suitable vibration frequency of sonic toothbrush is between 166-666 Hz (10000-37000 times/min), and sonic toothbrushes with different frequencies can achieve different degrees of tooth cleaning effect. The cleaning effect of sonic toothbrush is directly proportional to the frequency and amplitude of sonic waves.
The above is the related content about the working principle of ultrasonic toothbrush introduced by Bian Xiao. Ultrasonic toothbrush, I think everyone knows better? Want to know more about household items, please continue to pay attention.