Design of backdoor

CAR BACK DOOR

A car door is a type of opening, typically hinged on its front edge, but sometimes attached by other mechanisms such as tracks, for entering and exiting. Doors most often integrate side windows for visibility from inside the car and can be locked to secure the vehicle.

Car doors may be manually operated or with power assist supplied by the vehicle. Powered doors or power doors 

            The exterior side of the vehicle door contrasts in its design and finish from its interior side or a door panel that has decorative and functional features.

The exterior side of the door is designed of steel or other material like the rest of the vehicle's exterior. In addition, its decorative appearance, typically colored with a design, is intended to match with the rest of the vehicle's exterior, the central purpose being to add to the overall aesthetic  of the vehicle exterior.

A vehicle typically has two types of doors: front doors and rear doors

• Door locks and latches

Most vehicle doors are secured closed to the vehicle body with latches that may be locked to prevent unauthorized access from the exterior. There are a variety of car door locking systems. Door locks may be manually, or automatically operated, and may be centrally or individually operated. Also, they may be operated by remote control, with the transmitter often integrated into the main vehicle access and a key for the ignition.

Additionally, rear passenger doors are frequently fitted with child safety locks to prevent children from exiting the vehicle unless the door is opened from the exterior. These are also frequently used on police cars, to prevent suspect criminals from escaping whilst in police custody.

Vehicle door latches on practically all vehicles today are usually operated by use of a handle which requires the user to pull, lift, or tug - with some force towards themselves rather than push.

Door stays

Vehicle doors often include brakes, or 'stays', that slow the door down just before it closes, and also prevent the door from opening further than its design specification. The current trend is to have a three-stage door brake.

Door brakes exist because the doors on the first vehicles were heavy, so they had to be pushed hard to make them close. Soon after, automotive manufacturers managed to construct lighter doors, but users were used to closing doors with significant force; therefore doors could become damaged. Door brakes were then introduced to slow down the door just before the door closed to prevent damage; these soon became standard.

Reinforcements

                             ,The best way to reinforce your frame is by adding a layer of steel to prevent them from splitting.

 

INNER PANEL

                     INNER PANEL is the biw part shape as same as the class A surface. the main purpose of the panel is to improve and give the strength to hole whole door.

it is done by the stamping process

 

MATERIAL FOR THE BIW

My design pictures of back door

outer panel

Inner panel

draft analysis

Reinforcements

corner reliefs

Hemming reliefs and sealant gaps

                                                          All the back door parts and components are designed as per design rules and given instructions