Electric Toothbrush Presentation
By: Alpar Turk, Rob Bongiorno, Jonathan Franz and Harsh Tulsiani
Sequence of Design Activities
1. Identified desired toothbrush qualities by customer needs survey.
2. Analyzed the toothbrush to learn its pros and cons3. Dissected toothbrush to understand functionality4. Researched patens for toothbrushes5. Drew up different ideas to enhance the toothbrush6. Made pugh charts to find best designs7. Drew sketches of model tooth brush8. Created a soldworks model of the toothbrush9. Finalized project to present new and improved toothbrush
design
C:\Users\rob\Documents\Copy of projetc_management_template.xls
Durability Compactness User FriendlyEco Friendly Total Decimal
Durability 1 7 9 8 25.00 0.56Compactness 0.14 1 6 6 13.14 0.29User Friendly 0.11 0.17 1 4 5.28 0.12Eco Friendly 0.13 0.17 0.25 1 1.54 0.03 44.9623
User FriendlyEasy to clean
Low maintenance Safe Efficient Total
Easy to clean 1 0.33 0.2 0.25 1.78 0.08Low maintenance 3 1 0.6 0.75 5.35 0.23Safe 5 4.65 1 1.25 8.9 0.38Efficient 4 1.32 0.8 1 7.12 0.31Total 23.15
Durability 2.1 Reliable2.2 Water resistant
2.3 Damage resistance Total Decimal
2.1 Reliable 1 0.5 0.33 1.83 0.17 2.2 Water resistant 2 1 0.66 3.66 0.33 2.3 Damage resistance 3 1.5 1 5.5 0.5 Total 10.99
Problem Statement: To design a stable toothbrush that is durable, compact, user friendly and eco friendly
Lithium Ion Rechargeable Battery
Gears Brush Head Body Shape with Finger Contour
Power Switch Solar Cell
Power Source US20100116312A1 US20100116312
Body Shape US00D3972515
Energy Mechanism 5054149
Start/Stop Mechanism US0067993468B2
Brushing Action US00D3972515
External Search: Patent Search
Selection Criteria
weightOral B CrossAction Colgate Oral Stages Power Philips Sonicare Xtreme
e3000 Power Oral-B Vitality
Rating Value Score Rating Value Score Rating Value Score Rating Value Score
Quality 15% 3 3 0.45 4 4 0.6 4 4 0.6 4 4 0.6
Replacement Brush Head
10% 4 4 0.4 3 3 0.3 3 3 0.3 4 4 0.4
Ergonomics 10% 5 5 0.5 5 5 0.5 4 4 0.4 4 4 0.4
battery life 15% 5 14 days 0.75 4 7 days 0.6 4 12days 0.6 3 5 days 0.45
Price 15% 4 $12 0.6 5 $8.04 0.75 5 $19.97 0.75 3 $25 0.45
ease of operation
5% 3 3 0.15 4 4 0.2 5 5 0.15 3 3 0.15
Safety 15% 5 5 0.75 4 4 0.6 4 4 0.6 4 4 0.6
Appeal 15% 4 4 0.6 5 5 0.75 4 4 0.6 5 5 0.75
Total 100%
Total Score 4.20 4.30 4.0 3.8
Rank 2 1 3 4
External Research: Benchmarking
The final design includes a solar panel for added sustainability, steal rods and gears in order to preserve their length, and a large body made of strengthened plastic to prevent cracks and breaks.
Concepts
• All group members made different Pugh charts on different parts of the toothbrush.
• Each Pugh chart looks at 4 concepts.
Average Ranking Concept 1
Concept 2
Concept 3
Concept 4
Alpar (Body) 1.75 1.25 2.75 3.5
Harsh ( Power Generation)
2.0 2.75 3.5 1.0
John ( Energy Mechanism)
2.75 1.75 3.25 1.5
Rob ( Brush Head) 1.0 2.25 2.25 3.25
Final design
• For Brush Body : Concept 2• For Power Generation: Concept 4• For Energy Mechanism: Concept 4• For Brush Head : Concept 1
As a final design, our group has decided to choose the concepts below:
ToothBrush model (exterior)
ToothBrush Model (Interior)
The in built battery of the toothbrush is recharged by the solar panel as shown below
The Toothbrush’s Mechanism
Solar Panel
Solar Panel
Battery
The rechargeable battery supplies power to a motor as shown below
Motor
The motor is attached to a small gear that rotates a larger gear so as to increase power in the brush head.
Small Gear
Large Gear
The gears then provide movement to pivots which create an oscillating movement in the brush head.
Pivots that facilitate in oscillating motion
Brush Head
Conclusion
Based on our consumer needs the toothbrush is mainly made for durable and compact purposes. The body of the brush is durable due to the single piece cover that incorporates the mechanism of the toothbrush and the solar panel. As a result, if the brush were to fall the damage would be none to minimalistic. Moreover due to the compact body the toothbrush is not only travel/user friendly but also make the internal mechanism more durable. This is because there is a very slim chance of small parts detaching in the toothbrush’s mechanism.