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Electric Toothbrush R edesign. Hank Lin Jesse S haffer Kuralay M. Yaqi Yang 09/30/2011. Outline. Initial Problem Statement Customer needs assessment. Weighting of customer needs Revised problem statement External research Concept generation Final design Conclusion . - PowerPoint PPT Presentation
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Electric Toothbrush RedesignHank Lin Jesse ShafferKuralay M.Yaqi Yang
09/30/2011
Outline Initial Problem Statement Customer needs assessment. Weighting of customer needs Revised problem statement External research Concept generation Final design Conclusion
Project Management Analysis of customer needs. -----Jesse, Hank External search for concept generation
Literature search------------------------------------------------Kuralay Patent searches----------------------------------------------------Jesse Benchmarking-----------------------------------Yaqi (Chart) Jesse Product dissection------------------------------------------------Hank
Revising the design statement------------------------- Hank, Jesse Internal work for concept generation-- Hank, Jesse, Kuralay Concept selection---- -------------------------Hank, Jesse, Kuralay Embodiment of the design and feasibility analysis------Jesse,
Hank, Kuralay Materials and manufacturing processes----------------Hank
Detail Design-------------------------------------Hank, Jesse, Kuralay
Customer Needs Chart
1. Quality of Function 1.1 Clean teeth thoroughly i. Combination of spinning and Straight moving bristles 1.2 Turn on and off smoothly 2. Energy Efficiency 2.1 Charge Easily 2.2 Maintain Long Battery Life/Charge Duration 2.3 Eco-friendly 3. Comfort 3.1 Finger Grooves 3.2 Brushing motion is smooth 3.3 Material Selection i. Soft Material for bristles 4. Durability 4.1 Material i. Long-lasting brush material 4.2 Easy to Maintain i. Easy to assemble/disassemble ii. Parts easy to replace iii. Bristle Cover to protect bristles from outside elements5. Cost 5.1 Reasonable Pricing i. $30 or less 5.2 Part Replacement i. Parts are relatively inexpensive6. Size 6.1 Small Enough to fit in smaller backpack/suitcase compartments 7. Aesthetics 7.1 Attractive
External Research Literature review Product dissection Benchmarking Patent search
Initial Concepts-Body
Initial Concepts- Brush Head
Initial Concepts- PowerGeneration
Initial Concepts- Energy Mechanism
Concepts Functions and Means
Brush Head Body/Grip Power Generation Energy Mechanism
Concept 1
2 Small Circular head with soft bristles
Fits finger contour, multi-planar grip
1 Lithium Ion Rechargeable Long Shaft and Double gear
Concept 2
2 Small Circular Head, more stiff bristles
Fits finger contour, multi-planar grip, wide bottom, slightly smaller
2 AA Battery Single Gear and shaft
Concept 3 1 big, 2 small circular bristles Fits finger contour, multi-planar grip, wide bottom
2 AA Battery Long Lasting Double Gear and short Shaft
Concept 4 1 Small circular head, soft bristles
Slim body, Rectangular bottom 1 AA Battery Coiled spring and gear shaft
PUGH ChartConcepts and Functions Quality of Function (.333) Energy Effi ciency (.319) Comfort (.1) Durability (.1) Cost (.084) Size (.041)Aesthetics (.023) Sum RankHank Lin -1 0 0 0 -1 1 -0.351 3Jesse Shaffer 0 0 0 0 0 0 0 0 1Kuraylay Muratbekova 0 -1 0 0 -1 1 -0.337 2
Our team has decided to select Jesse’s combination of the concepts.
Final Sketchby hand
Final Sketchby SolidWorks
CAD Drawings Maximum Comfort Improved Energy
Efficient Improved
functionality What else do you
need?
How does it work? Lithium-ion battery loaded maneuverability Rotations of the gears cause the bristles
to turn East to clean
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