ELECTRIC TOOTHBRUSH DESIGN PROJECT

Kyle EmersonJake DeffibaughRachael Sykes

Ayagoz Abdrakhmanova

OUTLINEI. Initial Problem StatementII. Customer Needs Assessment

• Weighting of Customer Needs / AHP ChartIII. Revised Problem StatementIV. External Search

• Patent Search / BenchmarkingV. Concept Generation

• Morphological / Pugh ChartsVI. Concept SelectionVII. Final DesignVIII. Conclusions

PROJECT MANAGEMENT• How we went about this project?

o Gather critical information Customer Needs / External Search

• Allocate tasks Focus on strengths

• Collaborate ideas and concepts Morph / Pugh Charts

• Decide final design Concept Selection and Model Design

HIERARCHICAL CUSTOMER NEEDS

CHART1. Usability (0.25, 0.25) F.1 Brush Teeth2. Sustainability (0.18,0.18) F.1 Use as little energy as Possible F.2 Debris contained C.1 Energy consumption from power source3. Cost (0.159, 0.159) C.1 Material Cost4. Performance (0.157, 0.157)5. Design (0.091, 0.091) F.1 Grip

F.2 Brush Head6. Availability (0.068, 0.068)7. Sound (0.046, 0.046) C.1 Loud8. Battery Life (0.024,0 0.024) C.1 Rechargeable Batteries are Standard F.1 Batteries can be recharged9. Brand (0.023, 0.023) F.1 Recognizable

REVISED PROBLEM STATEMENT

We have decided to focus on an electric tooth brush. We will be trying to make this product smaller lighter and more sustainable. Along with these we are also trying to cut down on the noise it creates and make the battery more efficient. We will do this by employing different techniques from across different engineering disciplines.

SUMMARY OF EXTERNAL SEARCH ACTIVITIES• Conduct an Internet search on the reference

toothbrush and rival toothbrushes

• Patent search

• Benchmarkingo Oral-B CrossAction Pow Max Whitening,

Sonicare FlexCare, Arm & Hammer Spinbrush Pro Clean, and Oral-B Vitality

• Dissection

• Design Target

CONCEPT GENERATION• Using our morph charts (next slide), we

found our top 5 designs for each categoryo Energy Mechanism

Jake and Rachaelo Power Generation

Jake and Rachaelo Brush Head Design

Kyle and Ayagozo Body Design

Kyle and Ayagoz

CONCEPT SELECTION• Pugh Charts• 4 Functions:

o Energy Mechanism Cost Performance Sustainability Design

o Power Generation Cost Sustainability Battery Life Performance

o Body Design Design Sustainability Usability Cost

o Brush Head Design Design Performance Usability Sustainability

FINAL DESIGNSolid Works Model & Rough Sketch

Toothbrush Sketch

Charger

HOW IT WORKS• The battery supplies energy for the motor• The motor then spins the attached metal

arm• This metal arm is attached to some gears

that allow the brush head to rotate the the whole way around for optimal cleaning

• A circuit board will also make sure that the battery is not over-charged

IN CONCLUSION

• We feel that our redesigned toothbrush is very successful at fulfilling the needs of the customero More sustainableo More efficiento Better cleaning action