Folding Table (2019)
This project emerged from a need for a coffee table and a way to store it under my sofa-bed when not in use. The design concept is a table which folds into a flat-pack configuration for ease of storage or transportation. The table legs will fold in/out by pushing/pulling a recessed handle located under the tabletop.
Design Process
V.1 Sketch Model
This sketch model mechanism explores the use of a dual spring toggle mechanism that converts vertical input into radial travel of the table legs.
Design Exploration
Rapid exploration through sketch modeling of linkage designs using foam board, drywall rivets, rubber bands, and binder clips.
V.2 Sketch Model
This linkage design has the same mechanical output as the v.1 linkage, but the direction of the input is inverted - push down and the legs close instead of opening.
V.2.1 Leg Mount
The primary goals of this design were to minimize part count and simplify part design for low-cost and simple moldability. The correct geometry of the radial pin slot based on an established leg angle and degree of travel was also realized in this design.
3-D Printed Assembly
Video demonstrating the toggle action of the table leg. The next step is to design the linkage assembly under the tabletop that converts simple vertical input into radial travel of the moving pins on each of the four leg mounts.
V.2.1 Rendering Detail
Detail of the mount leg joint. Further design revisions will include internalizing the expansion spring (at the expense of increasing part complexity) so that it is not a hazard during operation.
V.3 Mount Development
A section view of the re-designed (v.3) collapsible table mount assembly. This design improves upon the previous version by internalizing the extension spring and leg axle element.
V.3.1 Mount Assembly
This assembly is comprised of a two-part mount enclosure which situates a rotating leg axle element within. This design eliminates the steel axel bolt present in the v.2 design, reduces operation hazards, and improves usability.
V.4 Mount Enclosure
Rendering of the v.4 leg mount enclosure currently in development. The shape of the mount was revised to reduce material and strengthen the enclosure assembly.