Design of backdoor

Design of Backdoor

Objective: To design Back door of car using the given Class ‘A’ surface. Using the provided styling surface to come up with a back door and using appropriate design methodologies and make the necessary reniforcements and emboss

Introduction

• It is a hinged board or door at the rear of the vehicle that can be moved up or down during loading and unloading.
• Back Door is also referred as 'Hatch' or 'Tailgate' or 'Trunk-lid' or 'Boot-door'.
• Its the rearmost part of the vehicle which gives access to the trunk and has mounts for tail lamps, hinges, wiper motor, gas stayetc

Functions of the Backdoor:

• It protects the occupants and luggage from getting damaged.
• It houses assembly of tail lamps, wiper motor and other components.
• It serves as entry and exit point for luggage/passengers.
• It houses windshield glass which helps in rear visibility.
• Parking sensors, rear view camera are mounted on it.

Types of Backdoor

1. Top mounted

• These type of back doors are used in a station wagon, pickup truck and some other sports utility vehicles.
• Today’s modern cars use top mounted tailgating systems which are both powered and also gas stay supported.
• These tailgates provide greater rear visibility compared to other types.

1. Side mounted

• It is generally used in van type MPVs, SUVs, pickup truck vehicles.
• These side mounted door/barn doors are a lot easier compared to top mounted ones.
• These doors are generally small in size and can be easily accessed.
• These doors are more convenient for the goods handlers carrying lengthy objects, long pipes where one door is kept open.
• It also saves accidental head impacts. It is a lot easier to load /unload things in vehicles having side-mounted doors.

1. Bottom mounted

• Bottom type or split type backdoor system is used in estate type cars, pickup trucks and some luxury SUVs.
• These are most convenient type of backdoor in which the bottom split is used as a support or even as a table for the touring people.

Design Consideration:

1. Visibility Critiria.
2. Latch and Stricker position
3. Hing Position
4. Gas Stay Position
5. Space Availability
6. Drain Hole
7. Hemming and Relief area's

Components of back door.

1. Inner Panel
2. Outer Panel
3. Hing Reinforcement
4. Latch and Stricker reinforcement
5. Gas stay reinforcement
6. Wiper Motor Reinforcement.

Input Data:

1. Class A of Back Door
2. Outer Panel Thickness - 0.75mm
3. Inner Panel Thickness - 0.75mm
4. Reinforcement Thickness - 0.75mm