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.