PROJECT ONE: TOOTH BRUSH REDESIGN
Team ThunderCatsKevin WestThomas DinhTyler AndersonEvan Armstrong
26 February 2012
Initial Problem Statement: To design a toothbrush that will meet the sustainability needs of rapidly energy consuming population while remaining effective in quality, cost, and maintenance.
Sequence of Project• Initial Assessment
• Customer Needs Gathering• Customer Needs Assessment (Hierarchal Needs List,
AHP)• External Search/Product Analysis
• Literary Review, Patent Search, Benchmarking• Product Dissection
• Concept Generation• Individual Design Creation• Product Design Finalized (Morph and Pugh Chart)
• Project Finalized• CAD Drawing• Progress Report
Project Management• Kevin
• Needs Assessment• Patent Search• Presentation
• Evan• Literary Review• Pictures
• Thomas• Needs Assessment• Patent Search• Progress Report• CAD Drawing
• Tyler
• Dissection• CAD Drawing• Benchmarking
• Communal• Brainstorming• Concept Generation• Product Finalisation
Hierarchal Needs Chart1. Durability
1. Rechargeable2. Sustainable3. Battery Life
2. Effectiveness
1. Bristle Rotation2. Easy to Use3. Price
3. Design
1. Bristle Design2. Color Scheme3. Portability
4. Noise
5. Speed
Durable Effective Noise Speed Design Total WeightDurable X 3 8 9 5 25 0.468Effective 1/3 X 6 7 3 16.33
30.306
Noise 1/8 1/6 X 2 1/3 2.625 0.049Speed 1/9 1/7 1/2 X 1/5 0.954 0.018Design 1/5 1/3 3 5 X 8.533 0.16
Revised Problem Statement: To redesign a current existing toothbrush to meet the desired durability, sustainability, efficiency, design, and cost expectations of consumers.
External SearchBenchmark
External SearchLiterary Review• Affordable
• Well-planned• High Availability• Liked by consumers
• Design• Effectiveness
• Popular and Successful
External SearchPatent
Function Power Efficiency Battery Durability Replacement
Switch 5666688
Crossing Bristles
6564416 B1
Tongue Cleaner
D609013 S
Clip-Off D563106 S
Concept GenerationBody Designs
Flat Bottom Green Material
Conical Rubber Casing
Concept GenerationBrushhead
Design
High Bristle Density
Long Bristles
Rubber Bristles
Concept GenerationEnergy
Mechanism
Corkscrew Motor
Double Helix Motor
Concept GenerationPower
Generation
Shakeable Battery
Battery in Pack/2nd Pack
Battery Series
Morphological ChartHuman Body Designs Energy Mechanism Power Generation Design Head
Flat Bottom Corkscrew Motor Shakeable Battery High Density Bristles
Conical bottom Double Helix Secondary Battery Pack Long Bristles
Green Material Series Circuit Rubber Bristles
Durable/Rubber casing
Concept SelectionCriteria In Deciding Finalized Concepts• Environmental• Effective• Durable• Well-designed
Concept Selection
Concept Selection
Concept SelectionFinal Selected Components• High Density Bristles• Environmentally Safe Material• Flat back and bottom• Shake-Recharge Battery• Double-helix style rotor• LED Battery indicator• On/Off Sub-surface Button
Concept Design
Function and Technology• Toothbrush works in traditional circuit• Motor
• Double Helix Groove• Moves rod connected to bottom brush up and down• Rotates rod as well to top brush to spin
• Battery• Mechanical-Power (Faraday Flashlight or linear induction)• Energy can be provided using coil-magnet system• Still recharged by traditional outlet cord