Hybrid Toothbrush

by Team 8• Taylor Beatty• Zack Miller• Cole Fenton• Hoang Dinh

Design ActivitiesPresented with a

problem statement of creating a more

sustainable toothbrush for Oral

B customers

Evaluated toothbrush and its

qualities (aesthetics, power, design)

Dissected toothbrush to determine parts

and evaluate how the brush worked

Created a customer needs assessment to reach goal of creating

a more sustainable toothbrush that

pleased the buyers

Created an AHP chart based on the

customer assessment

Concept generation for Brush Head Design, Energy

Mechanisms, Power Generation, Body

Design

Created a morph chart with ideas

that were generated

Generated Pugh charts based on

morph charts

Determined a final concept based on the rankings from the Pugh Charts

Project Management – Gant Chart

0.1 Begin Project

1.1 Interview users to establish requirements/survey1.2 Search the literature for any regulatory re-

quirements1.3 Research competitive toothbrush products

1.4 Create a hierarchical list of customer needs

1.5 Determine problems

2.1 Functionally decompose the project

2.2 Research the literature on similar subtask solutions

2.3 Generate concepts

2.4 Select promising concept(s)

3.1 Perform detailed analyses of concepts

3.2 Peform simulations

3.3 Material selection (notice of sustainability)

3.4 Component selection/availability

3.5 CAD Drawings

4.1 Preparation of first progress report

4.2 Preparation of Project 1 Presentation (Powerpoint)

4.3 Preparation of final presentation (Poster)

5.0 End Project

0 5 10 15 20 25 30 35 40 45 50

Days

Customer Needs AssessmentsAHP Chart

KeysA) Portability-7B) Noise Level-6C) Battery Life-9D) Aesthetics-5E) Simplicity-9F) Power Level-7G) Cost-8H) Easy to Replace-8I) Sustainability-6J) Durability-8

A B C D E F G H I J Total %

A 1 7/6 7/9 7/5 7/9 1 7/8 7/8 7/6 7/8 9.914 9.59%

B 6/7 1 6/9 6/5 6/9 6/7 6/8 6/8 1 6/8 8.498 8.22%

C 9/7 9/6 1 9/5 1 9/7 9/8 9/8 9/6 9/8 12.746 12.33%

D 5/7 5/6 5/9 1 5/9 5/7 5/8 5/8 5/6 5/8 7.081 6.85%

E 9/7 9/6 1 9/5 1 9/7 9/8 9/8 9/6 9/8 12.746 12.33%

F 1 7/6 7/9 7/5 7/9 1 7/8 7/8 7/6 7/8 9.914 9.59%

G 8/7 8/6 8/9 8/5 8/9 8/7 1 1 8/6 1 11.330 10.96%

H 8/7 8/6 8/9 8/5 8/9 8/7 1 1 8/6 1 11.330 10.96%

I 6/7 1 6/9 6/5 6/9 6/7 6/8 6/8 1 6/8 8.498 8.22%

J 8/7 8/6 8/9 8/5 8/9 8/7 1 1 8/6 1 11.330 10.96%

103.385

PROBLEM STATEMENT

• create a more sustainable toothbrush that is pleasing to the customers– Minimize the size of toothbrush, less material

would be used – Different shape for aesthetics and a better clean– Changing the type of batteries we can extend the

battery life of the toothbrush

External ResearchSummary

Oral-BCrossAction Power Max Whitening

SpinbrushClassic Clean

Colgate360o Sonicpower

Packaging Bulky due to charging station Neat Neat

Aesthetics Multiple colorsLook bulkyMultiple colors

Look slim and appealingMultiple colors

Ease to clean FulfillingRubber grip Fulfilling Fulfilling

Rubber grip/bent body

Bristle/Head features Replaceable bristle head part Replaceable head Tongue/check soft cleaner

On/off switch 2-buttons on/off 1-button on/off 1-button on/off

Price ($/1 item) $12 < $9 $5.25(available in $10.5/packet of 2)

Battery/power generator

Charging stationBattery is rechargable 2x AA-batteries 1x AAA-Battery

Product picture

MORPH CHART

FINAL DESIGN SKETCHES

Pic 1: Pic 2: Pic 3:Pic 4:

Vibration reduction, Rotational Brush Head AA battery + solar Angled neck,ring, and battery panels

hand grip,closer to motor

thinner body

Pugh ChartFinal Concept Selection

Final concept selection Sustainability Durability Aesthetic Easy to replace Total Rank

AHP Weighting 6 8 5 8 Weighting 0.22 0.30 0.19 0.30 Vibration reduction ring/Hybrid Tech 1 -1 1 -1 0.11 2Rotational/Arched Head with Gum -1 -1 1 1 -0.33 4AA-Battery + Solar Panel 0 0.00 3Thinner body/comfortable handle -1 1 1 -1 0.26 1

Criteria based on: Customer Needs Assessment, Sustainability Objective, and External Research• All parts: Recycled Material

• Energy mechanism – Vibration reduction and hybrid Vibration reduction ring on motor extended part (vibration rod)• Brush Head - Rotational/Arched Head with Gum on Head’s back: Required for basic cleaning function plus gum and soft parts cleaning feature• Power Generation – AA-Battery + Solar Panel: Reduced energy used by battery by collaborate solar power technology• Body Design - Thinner body/Comfortable handle: Required for Customer Needs Assessment

COMPLETE TOOTHBRUSH DESIGN

SIDE VIEW

FRONT VIEW

CAD DRAWING FOR FINAL DESIGN

Back Body with solar panel

Front Body with grip and switch

80 degree angled neck Replaceable

head

Final Design

Toothbrush MechanismHow technology has helped sustainability• Material Selection: Recycled plastic + rubber• Power Generation: AA-Battery hybridizes with Solar Cell

• Energy Mechanism: Hybrid technology

Solar cell

LiMH AA-battery

Series Sources MotorBrush Head

AA-Battery type Solar Cell support rate (Solar : Battery)

Capacity gain

Operating capacity

LiMH rechargeable1.2V, 1600-2500mAh(recommended)

2:4 1.5 times 1.44 - 2.25 hours

Alkaline1.5V, 3000mAh

2:5 1.4 times 3.15 hours

NiCd rechargeable1.2V, 600-1000mAh

2:4 1.5 times 21.6 - 36 mins

CONCLUSION

• Our entire design process and brainstorming of ideas was based off of the customer needs analysis

• Goals of Sustainability, aesthetics, portability, noise level, battery life, durability, and simplicity were reached