Ownership
Matl’s/Mfr/Assem DRI | Contributors | Project DRI |
|---|---|---|
kaizen liu , @Name, @Name |
Research
Hinges
Front door and back door space will limit amount of hinges and size as well:
Functional Requirements:
Must be able to support the weight of the door with minimal play
Must allow door to swing open up to 90° from the closed position
Non-Functional Requirements:
Designed for weight optimization
Ease of assembly
Low cost
High strength density (needs to take up less space)
Constraint Requirements:
Safety regulations
Follows rules of comp
Pin install: https://www.youtube.com/watch?v=yqOrkYh_-4c
Hinge install: https://www.youtube.com/watch?v=QFtfyfmmejo
Material Concepting
Hinges
Need strong materials, lightweight preferred
Steel (AISI 4140 or some other carbon steel)
Stainless Steel (304 or something similar)
Aluminum (6000/7000 series)
Manufacturing Concepting
Hinges
Custom made due to volume constraints
Similar design to ones used in real cars
Made using milling or sheet metal bending
Two Designs:
Sheet metal:
Pin: https://www.mcmaster.com/93131A390/
CNC:
Pin: https://www.mcmaster.com/98306A220/
Sheet metal better for mass manufacturing (need 8 of each hinge), but CNC has more strength
Assembly Concepting
Hinges
Need 4 main components
Inner/outer hinge
Pin
Bushings (2 per pin)
Lock ring/retaining clip
Proof-of-Concept Testing
Use FEA to simulate stress to ensure hinges hold up
Loading condition:
Initial FEA: