[Working principle of car door handles]:
The car door handles are located on the outside of the door. The door is opened by pulling the door handles, which is convenient for passengers to enter and exit the vehicle.
[Maintenance method]:
1. Regular cleaning: Clean the surface of the car door handle regularly to avoid dust and dirt accumulation.
2. Avoid collision: Avoid external impact on the car door handle to avoid damage.
3. Regular inspection: Check the connection of the door handle regularly to see if it is loose, and deal with it in time.
