Waterproof and dustproof motor

A motor structure, comprising:

• a motor;
• a circuit board, comprising a driver circuit for controlling the motor;
• an upper shell;
• a base;
• a lower shell;
• an outlet, disposed on a side of the lower shell independently, wherein wires of the circuit board is connected to the exterior of the motor structure through the outlet;
• a rubber material, used to seal the outlet;
• a first tight chamber, formed by closing the upper shell and the base together, wherein the motor is disposed in the first tight chamber;
• and
• a second tight chamber, formed by closing the base and the lower shell together, wherein
• the circuit board is disposed in the second tight chamber, wherein the motor comprises a silicon steel stator structure comprising:
• a plurality of poles, covered with insulated plastic and corresponding to a plurality of magnetic poles, wherein each pole comprises:
• an arched inner portion, forming an inner ring with other arched inner portions, wherein a rotator rotates within the inner ring;
• a radial portion, wherein a coil is wound on the radial portion;
• and
• an arched outer portion, preventing the coil from being separated from the poles;
• and
• a plurality of connectors, wherein each connector is connected between two poles, and forms an outer ring with the arched outer portions, and the connectors and the poles are detachable;
• the driver circuit further comprises:
• a voltage detector, detecting a voltage of a direct current (DC) power supply;
• a current detector, detecting a current of the DC power supply;
• and
• a controller, generating a driving signal for driving the motor according to the detected voltage and current;
• a power supply controller, generating a power to the controller;
• wherein the controller uses quasi-sine wave current control technology to generate the driving signal;
• wherein the controller generates the driving signal further according to a magnetic field signal provided by a Hall sensor on the motor.