Vibration motors can be divided into four categories. They are cylinder coreless vibration motor, SMD vibration motor, coin vibration type, brushless DC motor and drive motor. Applications include phones, vibrating toothbrushes, medical devices, games, fans, toys, remote-controlled airplanes and remote-controlled cars. Different kinds of vibration motors have different applications.

What is coreless vibration motor? 

In the structure, the corelsss vibration motor breaks through the rotor structure of traditional micro motor, and it is also very widely used, such as toy airplane model, electric eyebrow pencil, electric toothbrush, beauty products, etc...

The coreless DC motor' rotor structure solves the power loss caused by the eddy current of the traditional iron core motor, and greatly reduces the weight and moment of inertia, and reduces the mechanical energy loss of the rotor. The hollow cup rotor structure greatly improves the running characteristics of micro motor.

Coreless motors are divided into coreless brushless motors and brushed coreless motor.

Coreless micro DC motor is composed of housing, coil, magnet, end cup and commutator, its coil looks like a water cup, so it is called "hollow cup motor", because there is no iron core, so there is no core loss, high efficiency. Coil as rotor, small moment of inertia, easy to control. The rotor coil can only be made very thin, otherwise the flux will be lost, so the hollow cup motor power is generally less than 0.5 watts.

What is the characteristics of coreless vibration motor?

It is a micro motor and eccentric mass as one of the excitation source, the working principle of micro-vibration motor is installed in the rotor output shaft eccentric block, through the shaft and eccentric block high-speed rotation of the micro-motor is constantly out of balance, so that the micro-motor vibration, the higher the speed, the stronger the vibration. 

1. A variety of eccentric mass can be configured to meet the requirements of various vibration electronic products.

2. Vibration stability of micro vibration motor.

3 adjust the size of the eccentric block can change the vibration intensity of the micro vibration motor.

4. It has the characteristics of low noise, small volume, light weight and easy to use.

The Electrical characteristics of micro coreless vibration motor

1. Under certain input conditions, the difference between the actual value and the theoretical value of the output signal represents the precision of the micro-motor.

2. The input and output impedance of the miniature vibration motor are matched with the corresponding circuit, which can ensure the operation performance and accuracy.

3. The micro vibration motor has the characteristics of strong reliability, usually with the service life of the micro vibration motor, failure rate, reliability and other data to express the operation reliability of the micro motor. 

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