The functions of the door handle include unlocking and locking the door. By turning the pull rod, the door handle can transfer force to the push rod on the lock core to unlock or lock the door. In addition, the door handle also contains some safety mechanisms, such as the double lock mechanism, to prevent the door from opening accidentally, to ensure the safety of the vehicle
When the door is closed, the pull rod is in the pull up position. When we turn the tie rod, the connecting rod passes the human force to the lock core through the connection with the tie rod. This rotation process pushes the push rod inside the lock core, causing it to move downward. Push the lower end of the rod close to the latch, then the latch will exit from the door inside the lock hole, unlocking the door. Instead, when we close the door, the push rod inside the lock core is spring back upward, making the door lock again
