New Cars Other Accessories Lock System Central Door Lock Actuator Fit For BMW 7 G11 G12 OE 51217368450 51217368449

51217368450 

51217368449

Door lock actuator is divided into two kinds, one is dc motor type, one is relay type, which is used to lock the car front,rear,right,left door or tailgate,etc.

Working principle of central door lock
The working principle of the central control door lock is to convert electrical energy into mechanical energy, and the electric motor drives the gear to open and close the door. The basic composition is mainly composed of door lock switch, door lock actuator, door lock controller.
(1) door lock switch: most of the central control door lock switch is composed of the main switch and separate off, the main switch is installed on the driver side of the door, the main switch can lock or open the whole car; Separate closed mounted on other doors, can control a single door.
(2) door lock actuator: the door lock actuator is controlled by the door lock controller and performs the locking and opening tasks of the door lock. There are mainly electromagnetic, dc motor and permanent magnet motor type of three structures.
(3) door lock controller: provides the lock/open pulse current control device for the door lock actuator, which has the function of controlling the current direction of the actuator, and has the function of timing in order to shorten the working time. According to its control principle can be roughly divided into: transistor type, capacitive type and speed induction type 3.
Car door lock principle - Remote control principle
The wireless remote control function of the central control door lock means that the door can be opened and locked remotely without inserting the key key into the lock hole. The basic principle of remote control: from the owner's side to send out a weak radio wave, by the car antenna to receive the signal, the electronic controller ECU identification signal code, and then by the system's actuator (motor or electromagnetic coil) to perform the opening, locking action.