PROJECT ONE:TOOTHBRUSH REDESIGN

Jocelyn ConnollySeth GregorChris GigliottiSoyeon JeonOctober 7th, 2011

TimelineI. Introduction

1. Initial problem statement

2. Mission statement

II. Customer needs assessment 1. Customer needs list

2. Weighting of customer needs

III. Revised problem statement

IV. External Search

1. Literature review

2. Patent search

3. Benchmarking

4. Product dissection

5. Design target

V. Concept Generation

1. Concept generation

VI. Concept selection

VII. Final Design

Project Management

Redesign better toothbrush

Project timeline 18 days Team member

duties Revisions Closing

Customer Needs

Revised problem statement:

• Reduce noise vibrations with rubber casing

• Change from rotary to rotary/oscillating/vibrating

• One-button power switch

• Bristle variety

1. Portable (.07)

1.1 Lightweight 1.2 Small 1.3 Battery included 1.4 Thin 1.5 Retractable2. Durable (.19) 2.1 Will not easily break 2.2 Waterproof3. User friendly (.14) 3.1 Safe 3.2 Easy to turn on/off 3.3 Ergonomic 3.4 Low noise 3.5 Replaceable head 3.6 Comfortable grip 3.7 Safety switch 3.8 Appealing4. Cleaning effectiveness (.47) 4.1 Variety of bristles (.17) 4.2 Tongue scrub (.06) 4.3 Oscillating(0.26) 4.4 Mouthwash dispenser (0.02) 4.5 Fast (0.18) 4.6 Long battery life (0.31)5. Low Cost (.13)

External Search

Customers value cleaning effectiveness most

Researched strengths and weaknesses of electric toothbrushes Oscillating/pulsating toothbrush cleans

better than high frequency toothbrush (Sonicare Plus Vs. Braun Oral-B 3D Plaque Remover)

Concept 1- Power Switch

• One button switch

• Embedded in a flat-round bottom

• Prevents accidental turn-on

• User-friendly

Concept 2- Energy Mechanism

• Shaft and 2 gears

• Allows 2 different motions (oscillating, rotating)

• Low cost

Concept 3- Brush Head

• 2 small circular brushes

• Lightweight (portability)

• Efficient and effective cleaning

Concept 4- Cleaning Extra

• Tongue scrub

• Low cost• Better

cleaning• User-

friendly

Concept 5- Power Generation

• Long-lasting battery life

• Lightweight

• Low cost

Concept 6- Bristles

• Durable• Cleans

more effectively

• User-friendly

MORPHOLOGICAL CHART

Function/MeansBrushheadBody/GripPower GenerationEnergy MechanismBristlesNeck designBase designCleaning ExtrasPower Switch1 1 big circularrubber grip1 AA ElectromagneticsSoft nylon with different lengthsRetractable neckRectangular flat bottom Tongue scrubButton switch2 2 small circularErgonomical grip to fit hand2 AA Shaft and 2 gearsNylon and soft rubber with different lengthsPartial rubber neckRounded bottomMouth wash dispenserFlip switch3 1 big rectangularHole in back2 AAA Shaft and gearLong bristlesThin Flat bottom with on/off switchUV light for killing germsSensor 4 1 small circle 1 small rectangleLeft/Normal gripRechargable Vibrating RodCross-action bristlesPlastic neckOval Flat bottomLight to see in your mouth2 button power switch

Pugh Charts

Durability (.19) Portability (.07) Low cost (.13) Cleaning

effectiveness (.47) User-friendly (.14)

Final Design- Brush Head

Final Design- Base

Final Product

Functions

AA-battery for power One button to turn on/off Shaft and two gears Bristles Tongue Scrub Grip

Conclusion

Improvements on original product

Successful design

Low cost, durability, portability, cleaning effectiveness, user-friendly