Multimedia
CAD Iterations:
Iteration 7: 4-Bar Linkage Locking Update
New Features:
- old mechanism replaced with two rack and pinions
- acrylic covers reverted to old design
Iteration 6: Safety/Structural Update
New Features:
- 80/20 bar added for structural support on 4-bar linkage
- corner brackets added for structural support
- acrylic covers redesigned
- additional rubber/plastic covers added
Iteration 5: Additional Safety Update
New Features:
- acrylic covers added to side of 4-bar linkage
Iteration 4: Safety/Ease of Use Update
New Features:
- colors added to CAD components
- rubber/plastic covers added to sides/ends of 80/20 bars
- pawl redesigned to include release handle
Iteration 3: Simplification of Armrest
New Features:
- simplified armrest
Iteration 2: Redesigned Concept
New Features:
- uses replacement office chair base
- 3D printed stationary footrest
- 80/20 parts for structure
- vertically sliding armrest using 80/20 parts
- horizontally/vertically adjustable backrest using 4-bar linkage with ratchet and pawl mechanism
Iteration 1: Initial Concept
New Features:
- metal pipes for structure
- fabricated vertically sliding footrest
- fabricated vertically sliding armrest
- fabricated horizontally sliding seat