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