TRAVEL ELECTRIC TOOTHBRUSH RESEARCH, DEVELOPMENT AND

DESIGN

Team 7:Rachel Dahlberg

Tyler GardnerPeter JacksonJohn Nisbet

Outline

OBJECTIVE: To redesign an Electric toothbrush (travel version)

SEQUENCE OF DESIGN ACTIVITIES:

•Introduction (PETER)

•Project management (JOHN)

•Customer needs (RACHEL)

•External search (TYLER)

•Redesign concepts (JOHN)

•Final design( RACHEL & TYLER)

•Final remarks (PETER)

Project Management

John Peter Tyler Rachel Concept Design Dissection &

Analysis Patent Research

Concept Design Dissection &

Analysis Abstract

(Background Concepts)

Concept Design Dissection &

Analysis Benchmarking Literature

Review

Concept Design Dissection &

Analysis Customer

Needs Literature

Review Final Product

CAD Drawing

Customer Needs 1. Aesthetics (0.13) 1.1 Not vibrant, but not dull (0.065) 1.2 Simple colors (0.065)2. Portable/Comfortable (0.24) 2.1 Lightweight/Compact (0.069) 2.2 No bulky base (0.14) 2.3 Possibly folding (0.034)3. Efficient Brush (0.15) 3.1 Pulsing bristles vs. rotational vs. linear (0.050) 3.2 Bristle toughness ideal (0.022) 3.3 Interchangeable heads (0.020) 3.4 Easy to operate (0.036) 3.5 Flexible bristles (0.022)4. Extras (0.10) 4.1 Flossing attachment (0.017) 4.2 Tongue scrubber (0.023) 4.3 Travel Case (0.040) 4.4 Automatic shut off/notification of 2 minutes (0.010) 4.5 Attachable toothpaste (0.010)5. Power (0.21) 5.1 Powerful (0.057) 5.2 Runs on batteries (0.057) 5.3 Long battery life (0.057) 5.4 Multiple speed settings (0.016) 5.5 Battery life notification (0.023)6. Cost Efficient (0.18)

The team has decided that the portability and powering of the toothbrush are most important and thus will be primarily focused on.

The team also decided that while some power features and extras are important, others would be too complex for a simple electric toothbrush.

Customer NeedsFocused Criteria & Weights

Criteria Weights

Portability 0.24

Efficient Brush 0.15

Extras 0.10

Power 0.21

External Search

FUNCTION   ART        

  Bristles, Rotating Connector, Brush Neck

Plastic Case, Motor, Actuator, Circuit

Plastic Cover Plastic Shell, Metal Connector

Plastic Cover, Rubber Grip

Two AA Batteries

Brush US 2011/0099739          

Motor   US 6140723        

Brush Cover     US 5139142      

Battery Cover       US 7409741 B2    

Body         US 7409741 B2  

Battery           US 2011/0171520

Patent Search•Starting Point; what works, what does not.

Literature•Banks- Best toothbrushes hit hard to reach areas.

External Search, cont.

Feature Oral-B Advanced Power 400

Oral-B Cross Action Power

Sonicare Xtreme Power Colgate Max White Sonic Power Medium 53

Portable/Comfortable 2 3 1 4

Aesthetics 5 3 5 5

Efficient Brush 4 3 4 3

Extras 1 1 1 1

Power 3 2 4 4

Cost Efficient 5 5 2 5

Benchmarking•Colgate Max White Sonic Power Medium 53

Redesign Concepts

Brush Heads

Redesign Concepts, cont.

Body Design

Redesign Concepts, cont.

Power Generation

Redesign Concepts, cont.

Energy Mechanism

Morphological ChartFunctions Brush Head Body/Grip Power

GenerationEnergy MechanismMeans

1

Interchangeable Flossing Head

Simple Hand Grip and Front Button

1AA

Rotational Motion and Linear Motion with Locking Mechanism

2

Angled Brush Head with Tongue Scrubber

Side Button and Power Lights

2AA

Pulsing Motion to use with Tongue Scrubber and Flossing Head

Morphological Chart, cont.Functions Brush Head Body/Grip Power

GenerationEnergy MechanismMeans

3

Rotating Brush Head

Folding Handle

Lithium Ion

Rotational Motion

4

Rotating and Pulsing Brush Heads

Batteries in Series

Rechargeable

Rotational & Linear Motion

Pugh Charts

Brush Head

Heration 2 Portability (0.24)

Efficient Brush (0.15)

Extras (0.10)

Power (0.21)

∑row

Rank

Concept 1 0 0 0 0 0 3

Concept 2 0 1 1 0 0.25 1

Concept 3 0 -1 -1 0 -0.25 4

Concept 4 0 0 0 1 0.21 2

Pugh Charts

Body/GripHeration 4 Portability

(0.24) Efficient Brush (0.15)

Extras (0.10)

Power (0.21)

∑row

Rank

Concept 1 0 0 -1 0 -0.10 4

Concept 2 0 0 0 0 0 3

Concept 3 0 0 1 0 0.10 2

Concept 4 1 0 0 1 0.24 1

Pugh Charts

Power Generation

Lithium Ion

Heration 1 Portability (0.24)

Efficient Brush (0.15)

Extras (0.10)

Power (0.21)

∑row

Rank

Concept 1 1 0 0 -1 0.03 2

Concept 2 0 0 0 0 0 3

Concept 3 1 0 0 1 0.45 1

Concept 4 -1 0 0 0 -0.24 4

Pugh Charts

Energy MechanismHeration 3 Portability

(0.24) Efficient Brush (0.15)

Extras (0.10)

Power (0.21)

∑row

Rank

Concept 1 0 1 1 0 0.25 1

Concept 2 -1 -1 1 -1 -0.60 4

Concept 3 0 0 1 0 0.10 2

Concept 4 0 0 0 0 0 3

Final Design

Final Design

Final Design, cont.

• Brush Head- linear movement bottom brush, rotational movement top brush, fixed linearly

• Scotch yoke- linear motion controls tongue scraper

• Cylindrical lithium ion battery- speed settings and power button. Not rechargeable in body, life expectancy is 6 months

Final Remarks

ConclusionAs engineers, we strive to make life better by constant innovation.

Extent of SuccessWe have collectively generated ideas, and managed to put

them in the final develeopment of the concepts that led to the final design.

Our electric toothbrush design has become a multifunctional equipment with the addiction of the unique features such as tongue scrapper, lithium ion battery, speed settings, etc.

Thanks