Cat Brown Furniture Design

Tuesday 31 May 2011

THE MODEL

Just a couple of working photos of my chair prototype.

Monday 30 May 2011

MODEL DRAWINGS

Now time to include measurements and model drawings.

CHAIR MEASUREMENTS

ANGLE MEASUREMENTS

DRILL HOLE PLACEMENT

The final model will be made from cut, bent and welded 19mm tubular steel.

I decided to draw a bit on an earlier idea I had during concept stage to use a "jigsaw" style frame. This will eliminate the use of sleeves and provide an extra point of interest. I want to use large, chunky bolts to give the design an industrial type feel.

This is the earlier developed frame shape from which I gathered inspiration.

I then developed some quick solidworks models, to help visualize how the pieces will fit together.

This new design will allow for easy disassembly and minimal welding.

New frame's elevation views.

PLAN VIEW

SIDE VIEW

FRONT VIEW

BACK VIEW

Chair frame exploration

After deciding that I needed a new idea for the chair frame, I decided to get a flat pack chair from Ikea and explore the construction methods used in their chair.

After making the Ikea chair, I realised that I'm really going to need to use bolts or screws somewhere in my design. Doing this makes it relatively simple to assemble. At this stage I might also explore incorporating another idea that I developed in the concept stage.

Initial 1:1 scale drawing

A 1:1 drawing was developed for ergonomic checking.

I still wasn't 100% happy with the very simple frame. I also don't really like the sleeving idea, as it may make the frame look a bit messy and jeopardize the structural integrity of the design.

Initial solidworks model

Then I developed a solidworks model of the simple chair frame.

At this stage, attention needed to be given to materials and manufacturing. The model will require either 19mm or 25mm steel tube (available from Bunnings) with the processes of bending, cutting, and welding.

In order for the model to fit in the specified box, the legs will need to be removable. Ideally these would be screw off, but more likely sleeves for the legs will need to be made.