Why can the car door still be opened when the central lock is engaged?
1 Answers
It is normal for the car door to still be opened when the central lock is engaged. The basic structure of the door lock is as follows: 1. Door lock switch: Most central door lock switches consist of a master switch and sub-switches. The master switch is installed on the door next to the driver and can lock or unlock all doors of the vehicle; sub-switches are installed on other doors and can individually control a single door. 2. Door lock actuator: The door lock actuator is controlled by the door lock controller and performs the tasks of locking and unlocking the door. There are mainly three types of structures: electromagnetic, DC motor, and permanent magnet motor. 3. Door lock controller: A control device that provides lock/unlock pulse current to the door lock actuator. It has the function of controlling the current direction of the actuator and, to reduce working time, includes a timing function. According to its control principle, it can be roughly divided into three types: transistor type, capacitor type, and speed sensing type.