Design of Backdoor
Design of Backdoor
Aim:
Design the backdoor as per given skin requirements and also provide reinforcements for hinges, Latch, Gas Stay, and wiper motor areas.
Introduction:
A tailgate, or sometimes the hatch, is a hinged board or door at the rear of a vehicle that can be moved up or down during loading and unloading. Also called a tailboard, it is commonly found in pickup trucks or hatchback vehicles.
Design Consideration:
- Rear Visibility
- Latch and Stricker Reinforcement
- Hinge and Gas Stay Reinforcement
Parts and Design Methodologies:
Outer Panel:
The outer panel is the styling surface of the back door. It is a source of the design of other parts of the backdoor. It gives more aesthetics to the car. Its thickness is in the range from 0.65-0.75mm.
Inner Panel:
The inner panel provides strength to the back door. There are many cases where the inner panel subject to stress due to frequent opening and slamming. These stress factors are compensated by features like embossing and reinforcements. It also has a thickness range from 0.65-0.75mm.
Force Distribution:
From the test simulation, the design and direction of the embossing should be the guide for dissipating forces away from the passengers to the outside of the vehicle and thereby reducing the impact force drastically in case of collision.
Hemming:
Hemming is a technology used in the automotive industry to join inner and outer closure panels together (hoods, doors, tailgates, etc.). It is the process of bending/folding the flange of the outer panel over the inner one. The accuracy of the operation significantly affects the appearance of the car’s outer surfaces and is therefore a critical factor in the final quality of a finished vehicle.
There is a 0.2mm gap between the two panels and 1-2mm clearance between the edge of the inner panel. Space is provided for the sealant to ooze out and spread properly between the panels after the hemming process.
Draft Analysis:
Draft analysis lets you check parts and/or molds, to make sure they will separate. Hopefully avoiding "locking" the part in the mold (or mold). It will also detect undercuts and surfaces with no draft.
Conclusion:
Thus the backdoor was designed and Developed from the given styling surface with essential reinforcements and emboss definitions. The Draft Analysis was also done on the inner panel.