Automobile doors are generally composed of door body, accessories and internal and external decorative parts. There are sliding doors, revolving doors, folding doors and lifting doors. The door is an independent component of the car body, which is usually installed on the car body through hinges.

Sliding doors are mainly composed of inner and outer panels, stops, slide rails, door locks and other components.

Commonly used in passenger cars and some vans.

The revolving door includes door handle, lock core, latch, mirror, fillet, scratch-proof decorative strip, etc.

Door interior includes front door interior trim panel, front door interior handle, glove box, elbow support, electric window control panel, window manual regulator, exterior rearview mirror control components and other accessories.

In addition to interior decoration, exterior panels and hinges, doors have many accessories and internal components.

There are window glass, glass guide groove, glass lifter (manual or electric), wire harness, door lock mechanism, etc. in the door frame.

The deformation of the door outer panel can be trimmed by sheet metal tools such as sucker, crowbar and shaper. If the damage is serious, you can replace the door outer panel separately; After the anti-scratch decorative strip on the door is disassembled, it can be bonded with double-sided tape for the second time; Plastic deformation of door frame should be replaced; After the door is repaired, check the sealing and noise reduction performance, that is, the door switch is flexible and free to move; There are enough openings for passengers to get on and off, and the door switch should be lightly controlled to stop at the position of the largest opening and the middle opening. The door opening is generally 60? Within 70 degrees, and can ensure that the door can be opened smoothly on the inclined road surface, and the car

When the door is locked, it should not be automatically opened due to vibration and collision, and it is easy to open when it wants to; There should be enough strength and rigidity, and the reliability of the door switch is not affected by deformation and subsidence; There shall be no knocking when closing the door and no vibration and noise when driving; To have good sealing, rain and snow can't enter the car through the gap in the door, and can keep dust and mud out of the car.