Massage Gun--12V 24V 1800rpm-3500RPM DC Brushless External Rotor Motor_Profession Motor Manufacturer for BG Motor_DC Motor_AC Universal Motor_DC Brushless Motor

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Massage Gun--12V 24V 1800rpm-3500RPM DC Brushless External Rotor Motor

Client: Mr. Mark

Country: United States

Industry: massage trigger

Cooperation time:2020

Customers found us through Google in 2020, they are a professional manufacturer of sports massage products. Their goal was to make a massage gun that was small in size, low noise, and had a long motor life. At the time, the market was flooded with more expensive massage guns that worked within 20 minutes. Because customers require low noise, small size and long life, the motor is one of the core components of the machine. Customers expect us to work with them to develop a motor that meets their needs.

What they need：12V 24V 1800rpm-3500RPM DC brushless outer rotor motor

DIFFICULTY

Small size: The customer's product appearance size has been completed, so only the motor can meet the size requirements of the product, and the thickness of the motor cannot exceed 20mm;

Low noise: Because this newly developed massage gun product is for home use, the noise during use of the product cannot affect other indoor personnel

Low cost: customers need our product price to be controlled within USD5

Low current energy saving: The motor is used with lithium batteries. The efficiency of the motor is very important, and the efficiency of the motor must be controlled at more than 90%.

The motor and drive must be integrated;

SOLUTION

1. Design of the appearance and size of the motor: Our engineer team adopts the brushless motor structure of the outer rotor. When designing the motor, considering the high efficiency, the magnetic material is selected from the highest level of NdFeB material; the raw material is selected to be suitable for The same material as the UAV aircraft; In the design of the winding and the number of turns of the motor, through the simulation software, more than 20 winding methods have been designed, and the slot full rate and gap have been fully calculated.

2. Noise: The mechanical noise of the motor itself is not high. From the perspective of mechanics and aerodynamics, we have rationalized and optimized all the gaps that may generate noise, and the bearings are all imported international bearings.

3. Cost: The integrated design of motor and drive not only saves space, but also saves cost; we solve the problem of drive by developing and writing code by ourselves, and control the cost well.

After repeated discussions by our technical team, modifying the design and testing of the motor, the "BG-5520" motor that meets the customer's needs has been fully produced within one month.