Design of backdoor

BACK DOOR:- it's also called as tail gate. Backdoor are one of the type of door of the vehicle which are located next to the passanger seat which provides access to the luggage compartment

Types of the back door :-
1) Top-Mounted.

  

2) Side Mounted Doors.

   

DESIGN CONSIDERATION OF A BACKDOOR:

• Functional Requirement of Hinge and gas stay 
• Rear visibility criteria
• Luggage volume area
• Crash Analysis
• Bend Test, Dent Test, Torsion Test & Endurance Test
• Rear Crash Regulation
• Gap and flushness Requirements

Components to create: 

1) Outer panel Upper
 

2) Outer panel Lower
 


3) Inner panel
   


4) Left And Right Hinge Reinforcement.



5) Left and Right Gas Stay Reinforcement.



6) Striker Reinforcement.



7) Wiper Motor Reinforcement.

Tooling Direction:

• Before starting to design the inner panel of the back door the tooling direction for Deep Drawing purposes should be created.
  
  
  
  
  

  Trajectory

  The position of the hinge should be perpendicular to the latch at the time of latch and striker meets. The circle is drawn from the center of the hinge axis to find the path of the striker and perpendicular to the path.
  
  
  
  
  
  

  DRAFT ANALYSIS:

  • The draft analysis was performed for the tooling direction created at first and checked that the model is suitable for manufacturing.
  
  
  

  HEMMING:

  Hemming & seaming are two similar types of metalworking processes in which a sheet metal edge is rolled over onto itself. Hemming is the process in which the edge is rolled flush to itself.