What is the working principle of car door locks?

What is the working principle of car door locks?

As an important part of the car body, the door is required to meet the entry and exit of people and goods. It has a sealing function to isolate the interior of the car from the outside. In addition, the door is required to be safe and reliable. The door will not open automatically when driving or colliding. With good anti-theft performance. In order to meet these requirements, in addition to the reasonable structure and proper strength of the doors and the body, a safe and reliable locking system is required. The lock body and the lock system are composed of an engaging portion and a manipulating portion. The common structure of the engaging portion is a rotor card type and a rack and pinion type. Since the card type lock is reliable in engagement, it can withstand a large load and requires low assembly precision. It is widely used.

The working principle of the meshing system and the working process meshing system are the core components of the lock mechanism. The main working process of the meshing is the state in which the latch and the rotor start to mesh when the door is about to close. When the door continues to close, the lock ring drives the rotor to rotate, and finally the card plate engages with the notch of the rotor under the action of the spring, and the door lock is locked by locking the door lock. At this time, only the card plate and the rotor are disengaged. The door lock opening control part mainly includes a door inner handle, a lock switch and a connecting rod, and an outer handle and a lock cylinder (front door lock) and a central locking actuator. The operating part controls the position of the card board through the link mechanism to realize the operation of unlocking and locking. When the unlocking operation is performed, the inner handle drives the connecting rod to rotate through the connecting rod, the connecting rod drives and the rod is hinged, and the connecting rod drives the connecting rod with the connecting rod. Rotating around the shaft and rotating the rod around the shaft through a slider that can slide inside the connecting rod, the rod drives the card to rotate through the pin shaft, and the card plate is disengaged from the notch of the rotor to make an unlocking action. Similarly, when operating from outside the vehicle, the outer handle directly drives the rod to rotate through the same transmission process to drive the card to rotate, thereby completing the unlocking action. During the locking operation, the rotor 7 is rotated counterclockwise under the push of the lock. When the position of the rotation to the notch is engaged with the card board, the door is simultaneously closed to the design position, the card clamps the rotor, and the rotor hooks the lock to complete the locking action.