1. Magnetic Levitation Sonic Motor (Mainstream High-End Choice)
This type of motor is currently the most mainstream and highest-performing choice for mid-to-high-end electric toothbrushes.
Working Principle: It utilizes electromagnetic principles, driving a vibrating component with magnets by changing the magnetic field, thus propelling the brush handle in a high-speed, linear reciprocating motion. The entire process is similar to a "magnetic levitation train," with no direct physical contact or transmission.
Powerful and Stable Power: Low energy loss; even with low battery power, the vibration frequency remains consistent.
Large Amplitude: The bristles can swing back and forth with a large amplitude, effectively cleaning not only the tooth surface but also generating a flowing cleaning force (sonic flow) in the mouth, flushing hard-to-reach areas such as between teeth.
Low Noise: Avoiding mechanical collisions such as gears results in a relatively smooth and quiet operation.
Low Handle Vibration: Vibration is mainly concentrated in the brush head, resulting in a comfortable grip without any numbness.
Long Lifespan: Minimal mechanical wear, making it extremely durable.
2. Precision Rotary Motor (The Choice for High-Efficiency Physical Cleaning)
This type of motor primarily drives the brush head in precise mechanical rotation, representing a cutting-edge technology for achieving physical friction cleaning.
Working Principle: It typically consists of a powerful miniature DC motor and a precision gear transmission system, converting the motor's rotational motion into the brush head's circular rotation or alternating left-right rotation (pendulum motion). Some advanced technologies further incorporate forward and backward pulse motions.
High Physical Cleaning Efficiency: The brush head directly and at high frequency rubs the tooth surface, resulting in a highly effective physical scraping effect against plaque.
Precise Movement: The precisely designed transmission system ensures a stable and consistent brush head movement trajectory.
