What kind of micro DC motor can be used for electronic locks.
What kind of DC motor will be used to control the unlocking and locking operation of an electronic lock by driving the lock tongue through the rotation of a DC motor? Below is a brief introduction to Tianfu micro motors.
The DC motor of an electronic lock needs to have the function of reducing speed and increasing torque. The main structure is composed of a micro DC motor and a gear reduction device. The driving motor commonly includes brushed DC motor, brushless DC motor, hollow cup motor, and some electronic locks also use stepper motor. The reduction device commonly includes planetary gearbox, metal gearbox, or other types of non-standard gear reduction structures. The electronic lock drive motor has the following performance characteristics.
Brushed DC motor
Brushed DC motors are widely used in electronic locks. The stator of brushed motors is equipped with fixed main magnetic poles and brushes, and the rotor is equipped with armature windings and commutators. The electrical energy from the DC power supply enters the armature winding through brushes and commutators, generating armature current. The magnetic field generated by the armature current interacts with the main magnetic field to produce electromagnetic torque, causing the motor to rotate and drive the load. It has the advantages of convenient and simple speed regulation, and low cost.
DC brushless motor
Similar to brushed motors, brushless motors refer to motors without brushes and commutators (or collector rings), also known as commutatorless motors. Brushless motors have the advantages of traditional DC motors, while eliminating carbon brushes and slip ring structures. They are small in size, light in weight, have high output, excellent torque characteristics, good torque performance at medium and low speeds, high starting torque, and low starting current. But the speed regulation is more complex and the cost is also higher.
Hollow cup DC motor
The electronic lock hollow cup motor has the advantages of small size, high efficiency, fast starting and braking, and extremely fast response. The hollow cup motor belongs to the DC permanent magnet servo and control motor, and can also be classified as a micro special motor, which is also a type of DC motor. Hollow cup electric motors have outstanding energy-saving characteristics, sensitive and convenient control characteristics, and stable operating characteristics. In high-speed operation, the speed can be easily and sensitively adjusted, and the stability of operation is very reliable. The fluctuation of speed is very small, and as a micro motor, its speed fluctuation can be easily controlled. Widely used in smart locks, electronic locks, and fingerprint locks.
