Home Appliances

Precision drive solution for massage N20 micro-reduction motor in electric toothbrushes

The N20 series of micro DC gear motors, with their ultra-compact structure, efficient energy conversion and precise motion output, have become the core drive units of modern sonic and rotary electric toothbrushes. This motor, through a precise planetary gear system, converts the output of a high-speed micro-motor into an optimized frequency and torque suitable for oral hygiene, providing users with a stable, efficient and long-lasting brushing experience.

Project Background
With personal oral care entering the intelligent era, electric toothbrushes have been upgraded from basic cleaning tools to health management devices that integrate efficient teeth cleaning, gum protection, and intelligent timing. Its core performance - vibration frequency stability, brush head swing accuracy, endurance and working noise - directly depends on the technical level of the micro drive motor. The N20 motor is precisely a micro-power solution that has been deeply optimized for the strict requirements of oral care equipment.

The working principle of an electric toothbrush and the role of the motor
Sonic toothbrush: It generates high-frequency linear vibration (usually over 31,000 times per minute) through a motor-driven eccentric wheel, causing the bristles to produce ultrasonic flow-cleaning power
Rotary toothbrush: It achieves alternating forward and reverse rotation of the brush head through a motor-driven transmission mechanism, generating mechanical frictional cleaning force
Both types of technical routes require the motor to have:
1. Extremely high vibration/rotation accuracy: Ensuring stable and effective cleaning actions
2. Excellent energy efficiency ratio: Achieve long battery life with limited battery capacity
3. Excellent waterproof performance: Suitable for damp usage environments
4. Ultra-low working noise: Enhance user comfort

The N20 motor, through customized gear ratios and electromagnetic optimization, perfectly ADAPTS to the frequency and torque requirements of different technical routes.

The core features of N20 micro-reduction motor in electric toothbrushes

1. Precise vibration control: Utilizing high-precision micron-level processed gears, the radial runout at the output end is extremely small, ensuring that the vibration frequency remains stable within ±5% of the design value, providing a reliable guarantee for effective teeth cleaning
2. High-efficiency and energy-saving design: Optimized magnetic circuit and low-friction bearing system, energy conversion efficiency can reach over 75%. Combined with intelligent power management, the toothbrush can last for more than 30 days on a single charge (2 times a day, 2 minutes each time).
3. Comprehensive waterproof structure ** : The standard model features an IPX7 waterproof rating. The motor shaft is made of special stainless steel and equipped with a precision oil seal, ensuring reliable long-term operation in humid environments
4. Ultra-quiet operation ** : The rotor, which has been dynamically balanced and corrected, and the special sound-absorbing gear material ensure that the working noise is below 45 decibels. Even in the early morning, it will not disturb others
5. Intelligent driver compatibility: Supports PWM precise speed regulation, allowing for easy frequency switching among various modes such as cleaning, whitening, and sensitivity, and works perfectly in coordination with the main control MCU
6. Long-life design: Utilizing wear-resistant ceramic shaft cores and a long-lasting lubrication system, the designed service life exceeds 3 years under high-frequency usage scenarios twice a day

Application advantages
In electric toothbrush products, the N20 motor achieves a perfect balance between performance and reliability:
2. Clinical-grade cleaning effect: Stable high-frequency output ensures that each brushing session meets the cleaning standards recommended by dentists
3. User-friendly experience: Ultra-low noise and intelligent mode switching provide a comfortable usage experience
4. Quality reliability: Stringent waterproof design and long service life significantly reduce the product return rate
5. Design flexibility: The compact size of 20mm in diameter provides ample space for the industrial design of toothbrushes

Regarding Tyhe Motor
TYHE Motor has accumulated over 15 years of technology in the field of micro-precision drive. The N20 series is a star product that we have deeply developed for personal care appliances. We not only offer a variety of standard specifications (3V/6V/12V, multiple reduction ratios), but also can provide according to customer requirements

1. Deep customization service: Specific frequency output, special waterproof requirements, low power consumption optimization
2. Complete solution: Integrated design support for motor + drive board + vibration damping structure
3. Quality Assurance System: Each motor undergoes a 72-hour aging test and full performance inspection

By choosing Tyhe Motor, you will obtain a leading technology, reliable quality and prompt response micro-motor partner. Let's leverage the outstanding performance of the N20 motor to help your electric toothbrush products win the trust of consumers in the fierce market competition with excellent cleaning effects, long-lasting battery life and reliable quality performance, and jointly promote the development of oral health care technology.